Tom from SWISCO responded:
June 16, 2020
As long as your bottom fitting is 1" deep, then the S351-32 should work well for you. Your option is based on an older, outdated rating system. One of our stamp options very well may work for you, but you will need to weigh your sash on a scale to confirm which one to go with. We have a chart on the S351-32 store page that tells you exactly how much weight each option supports. |